1,721,156 research outputs found
Crohn's disease of the vulva: A case report
No full textA rare case of vulvar Crohn's disease occurred in a 43-year-old woman who presented with a monolateral plaque on the vulva with a granulomatous histologic pattern. The problem of distinguishing Crohn's granuloma from other granulomatous lesions is underlined
Allergic contact dermatitis from ophthalmic products: can pre-treatment with sodium lauryl sulfate increase patch test sensitivity?
No full textIn patients suspected of allergic contact dermatitis because of topical ophthalmic medicaments, patch tests performed with patients' own products are often negative. The irritant anionic surfactant sodium lauryl sulfate (SLS) may alter the stratum corneum and increase antigen penetration. Pre-treatment of the skin with SLS 0.5% for 24 h was performed in the sites of patch tests with patients' own products in 15 selected patients. In patients previously negative to their own products tested with conventional patch tests, SLS pre-treatment showed 6 new relevant positive reactions and induced a stronger positive reaction in 1 patient. SLS pre-treatment could be proposed as an alternative promising method, which may increase sensitivity of patch tests with patients' own products
Going Beyond Counting First Authors in Author Co-citation Analysis
Full text linkThe present study examines one of the fundamental aspects of author co-citation analysis (ACA) - the way co-citation
counts are defined. Co-citation counting provides the data on which all subsequent statistical analyses and mappings
are based, and we compare ACA results based on two different types of co-citation counting - the traditional type that
only counts the first one among a cited work's authors on the one hand and a non-traditional type that takes into
account the first 5 authors of a cited work on the other hand. Results indicate that the picture produced through this non-traditional author co-citation counting contains more coherent author groups and is therefore considerably clearer. However, this picture represents fewer specialties in the research field being studied than that produced through the traditional first-author co-citation counting when the same number of top-ranked authors is selected and analyzed. Reasons for these effects are discussed
Variations on the Author
Full text link“Variations on the Author” discusses two of Eduardo Coutinho’s recent films (Um Dia na Vida, from 2010, and Últimas Conversas, posthumously released in 2015) and their contribution to the general question of documentary authorship. The director’s filmography is characterized by a consistent yet self-effacing form of authorial self-inscription: Coutinho often features as an interviewer that rather than express opinions propels discourses; an interviewer that is good at listening. This mode of self-inscription characterizes him as an author who is not expressive but who is nonetheless markedly present on the screen. In Um Dia na Vida, however, Coutinho is completely absent form the image, while Últimas Conversas, on the contrary, includes a confessional prologue that moves the director from the margins to the center of his films. This article examines the ways in which these works stand out in the filmography of a director who offers new insights into the notion of cinematic authorship
Appropriate Similarity Measures for Author Cocitation Analysis
Full text linkWe provide a number of new insights into the methodological discussion about author cocitation analysis. We first argue that the use of the Pearson correlation for measuring the similarity between authors’ cocitation profiles is not very satisfactory. We then discuss what kind of similarity measures may be used as an alternative to the Pearson correlation. We consider three similarity measures in particular. One is the well-known cosine. The other two similarity measures have not been used before in the bibliometric literature. Finally, we show by means of an example that our findings have a high practical relevance.information science;Pearson correlation;cosine;similarity measure;author cocitation analysis
Evaluation of complex modulus and fatigue properties of cold recycled material mixtures using small-scale specimens
No full textThe laboratory mechanical characterisation of cold recycled materials mixtures is necessary to develop mechanistic-empirical design methods for cold recycled pavements. The present paper describes a laboratory experiment where small-scale specimens were used to characterise the complex modulus and fatigue properties of cement bitumen treated materials (CBTM) manufactured with bitumen emulsion and cement. In particular, CBTM specimens with diameter of 38 mm were tested and compared with two group of specimens with diameters of 100 and 75 mm. The complex modulus was measured by means of cyclic compression tests and then rheological modelling was applied. Fatigue tests were carried out in direct tension mode of loading. All tests were carried out at long-term curing conditions. Results and statistical analysis showed that the complex modulus values measured on large specimens (diameter of 100 and 75 mm), were not significantly different. On the other hand, the stiffness modulus values measured on small specimens (diameter of 38) were about 15% lower
Alcune relazioni tra grandezze volumetriche e meccaniche di conglomerati bituminosi
No full textViene presentata un’indagine sperimentale avente lo scopo di valutare gli effetti del costipamento e della percentuale di bitume sulle prestazioni meccaniche di conglomerati bituminosi.
Attraverso l’analisi dei risultati si sono potuti interpretare alcuni fenomeni che regolano l’interazione tra le grandezze volumetriche, di resistenza e di deformabilità. In particolare sono state elaborate relazioni empiriche che consentono di stimare alcune grandezze meccaniche di miscele bituminose sulla base delle loro proprietà volumetriche
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